Pension, Postretirement and Postemployment Benefits (Tables)

12 Months Ended

Dec. 31, 2017

	Pension				Postretirement

	2017		2016		2017		2016
Change in Projected Benefit Obligation
Projected benefit obligation – beginning	$	372,824		361,060		28,484		26,247
Service cost		1,290		2,100		691		532
Interest cost		15,303		16,106		1,179		1,175
Actuarial (gain) loss		27,670		17,353		3,432		2,380
Benefits paid		(22,579)		(22,508)		(1,633)		(1,850)
Expenses paid		(1,141)		(1,287)		—		—
Projected benefit obligation – ending	$	393,367		372,824		32,153		28,484
Accumulated benefit obligation – ending	$	393,367		372,824		32,153		28,484

Change in Plan Assets
Fair value of plan assets – beginning	$	309,380		259,329		—		—
Actual return on plan assets		44,562		8,961		—		—
Employer contribution		52,767		64,885		—		—
Benefits paid		(22,579)		(22,508)		—		—
Expenses paid		(1,141)		(1,287)		—		—
Fair value of plan assets – ending	$	382,989		309,380		—		—

Reconciliation of Funded Status
Projected benefit obligation	$	(393,367)		(372,824)		(32,153)		(28,484)
Fair value of plan assets		382,989		309,380		—		—
Funded status		(10,378)		(63,444)		(32,153)		(28,484)
Unrecognized net loss		132,088		138,529		5,853		2,420
Net amount	$	121,710		75,085		(26,300)		(26,064)

Accrued liabilities	$	(2,448)		(2,553)		(1,630)		(1,599)
Other liabilities		(7,930)		(60,891)		(30,523)		(26,885)
Accumulated other comprehensive earnings (loss)		132,088		138,529		5,853		2,420
Net amount	$	121,710		75,085		(26,300)		(26,064)


Assumptions used to determine the year-end pension and postretirement benefit obligations are as follows:

	2017	2016
Pension
Weighted average discount rate	3.71%	4.22%

Mortality table	RP-2014/Scale BB	RP-2014/Scale BB

Postretirement
Discount rate	3.74%	4.26%
Health care cost trend rate assumed for next year	6.50%	7.00%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate)	5.00%	5.00%
Year that the rate reaches the ultimate trend	2024	2021

					Fair value measurements using:


					Quoted
					Prices in
					Active		Significant
					Markets For		Other		Significant
					Identical		Observable		Unobservable
			Fair		Assets		Inputs		Inputs
			Value		(Level 1)		(Level 2)		(Level 3)
2017
	Equity:
		Large Cap	$	38,400		38,400		—		—
		Small Cap		25,300		25,300		—		—
		International measured at net asset value (a)		43,900		43,900		—		—
		Other measured at net asset value (a)		300		—		—		—
Fixed Income measured at net asset value (a)				217,200		—		—		—
Total Return Fund measured at net asset value (a)				26,900		26,900		—		—
Cash Equivalents measured as net asset value (a)				31,000		—		—		—
			$	383,000		134,500		—		—

2016
	Equity:
		Large Cap	$	29,100		29,100		—		—
		Small Cap		29,200		29,200		—		—
		International measured at net asset value (a)		40,100		40,100		—		—
		Other measured at net asset value (a)		1,300		—		—		—
Fixed Income measured at net asset value (a)				119,500		—		—		—
Total Return Fund measured at net asset value (a)				29,000		29,000		—		—
Cash Equivalents measured as net asset value (a)				61,100		—		—		—
			$	309,300		127,400		—		—

	(a) Certain investments that are measured at fair value using the net asset value per share are not classified in the fair value
		hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy
		to the amounts presented in the Schedule of Changes in Plan Assets disclosed previously in this note.

The following is a detail of the components of the net periodic benefit cost for the three years ended December 31, 2017.

	2017		2016		2015
Components of Net Periodic Cost

Pension
Service cost	$	1,290		2,100		1,918
Interest cost		15,303		16,106		15,683
Expected return on assets		(19,534)		(17,013)		(18,538)
Amortization of prior service cost		—		—		65
Amortization of actuarial loss		9,082		7,361		7,468
Curtailment/settlement losses		—		—		781
Net periodic benefit cost	$	6,141		8,554		7,377

Postretirement
Service cost	$	691		532		567
Interest cost		1,179		1,175		1,154
Amortization of actuarial (gain) loss		—		—		(304)
Curtailment gain		—		—		(3,842)
Net periodic benefit cost (income)	$	1,870		1,707		(2,425)

See note 17 for additional information on the 2015 curtailment (gain) loss.

	2017	2016	2015
Pension
Weighted average discount rate	4.22%	4.58%	4.22%
Long-term rate of return on plan assets	6.25%	6.75%	7.00%

Postretirement
Discount rate	4.26%	4.64%	4.49%
Health care cost trend rate assumed for next year	7.00%	7.00%	6.50%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate)	5.00%	5.00%	5.00%
Year that the rate reaches the ultimate trend rate	2021	2021	2020